Brass check valves are automatic one-way flow control devices that open under forward pressure and close when flow stops or reverses, helping prevent reverse flow without manual operation. Apex Flow Solutions stocks brass check valves in several configurations; ratings, seals, connections, and sizes vary by product, so confirm the specification on each product page.
-
1/8 in. Inline Check Valve, Vertical or Horizontal -
1/8 in. Brass Spring Check Valve, 500 PSI, Female NPT x Female NPT, NBR Seal -
1/8 in. Brass Spring Check Valve, 500 PSI, Male NPT x Female NPT, NBR Seal -
1/8 in. Brass Spring Check Valve, 500 PSI, Female NPT x Female NPT, Viton Seal -
1/8 in. Brass Spring Check Valve, 500 PSI, Male NPT x Female NPT, Viton Seal -
1/8 in. Brass Check Valve, Female NPT x Female NPT -
1/4 in. Hose Barb x 1/4 in. Male NPT Brass Check Valve -
1/4 in. Brass Inline Check Valve, Buna-N -
1/4 in. Brass Spring Check Valve, 500 PSI, Female NPT x Female NPT, NBR Seal -
1/4 in. Brass Spring Check Valve, 500 PSI, Female NPT x Female NPT, Viton Seal -
1/4 in. Brass Check Valve, Female NPT x Female NPT -
1/4 in. Brass Check Valve, Male NPT x Female NPT -
1/4 in. Brass Check Valve, Male NPT x Male NPT -
3/8 in. Inline Check Valve -
1/2 in. Brass Inline Check Valve, Buna-N -
1/2 in. Brass Spring Check Valve, 500 PSI, Female NPT x Female NPT, NBR Seal -
3/4 in. Brass Spring Check Valve, 500 PSI, Female NPT x Female NPT, NBR Seal -
3/4 in. Brass Spring Check Valve, 500 PSI, Female NPT x Male NPT, NBR Seal -
3/4 in. Brass Spring Check Valve, 500 PSI, Female NPT x Female NPT, Viton Seal -
3/4 in. Brass Spring Check Valve, 500 PSI, Female NPT x Male NPT, Viton Seal -
1-1/4 in. IPS Brass Inline Check Valve -
1-1/4 in. Brass Inline Check Valve, Buna-N -
1/8 in. Brass Ball Check Valve, Compression -
1/4 in. Brass Pneumatic Check Valve, Female NPT x Female NPT
500 PSI Female-Thread Spring Check Valves
These are female NPT × female NPT spring-loaded poppet check valves in the manufacturer's 500 PSI WOG (Water, Oil, Gas) series, offered with Buna-N (NBR) or Viton (FKM) seals depending on the model. Sizes and exact ratings are listed on each product; confirm before specifying.
Inline Poppet Check Valves
Brass inline poppet checks use forward flow to lift the poppet and spring pressure to close it when flow stops. They are offered across a range of pressure ratings for water, air, oil, and compatible service; confirm the rating and service on the specific product.
Anti-Siphon Check Valves
Anti-siphon check valves mount at the discharge of chemical metering and peristaltic pumps to help limit back-migration of chemicals into the pump head and supply tubing when the pump stops. The hose-barb inlet connects to the dosing-pump discharge hose. Confirm the connection and suitability for your pump on the product page.
When to Choose Brass vs. Stainless vs. PVC
Brass is a common choice for water, air, oil, and non-halogenated gas service at standard pressures. For strongly corrosive chemicals, see our 316 stainless steel check valves or PVC check valves. Lead-free brass models are available where low lead content is required; confirm the specific product's manufacturer listing. Confirm chemical compatibility against the manufacturer data.